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<h2><span class="refentrytitle"><a name="GstCaps.top_of_page"></a>GstCaps</span></h2>
<p>GstCaps — Structure describing sets of media formats</p>
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<div class="refsect1">
<a name="GstCaps.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="GstCaps.html#GST-CAPS-REFCOUNT:CAPS" title="GST_CAPS_REFCOUNT()">GST_CAPS_REFCOUNT</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="GstCaps.html#GST-CAPS-REFCOUNT-VALUE:CAPS" title="GST_CAPS_REFCOUNT_VALUE()">GST_CAPS_REFCOUNT_VALUE</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="GstCaps.html#GST-CAPS-IS-SIMPLE:CAPS" title="GST_CAPS_IS_SIMPLE()">GST_CAPS_IS_SIMPLE</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="GstCaps.html#GST-STATIC-CAPS" title="GST_STATIC_CAPS()">GST_STATIC_CAPS</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="GstCaps.html#GST-CAPS-FLAGS:CAPS" title="GST_CAPS_FLAGS()">GST_CAPS_FLAGS</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="GstCaps.html#GST-CAPS-FLAG-IS-SET:CAPS" title="GST_CAPS_FLAG_IS_SET()">GST_CAPS_FLAG_IS_SET</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="GstCaps.html#GST-CAPS-FLAG-SET:CAPS" title="GST_CAPS_FLAG_SET()">GST_CAPS_FLAG_SET</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="GstCaps.html#GST-CAPS-FLAG-UNSET:CAPS" title="GST_CAPS_FLAG_UNSET()">GST_CAPS_FLAG_UNSET</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<span class="c_punctuation">(</span><a class="link" href="GstCaps.html#GstCapsForeachFunc" title="GstCapsForeachFunc ()">*GstCapsForeachFunc</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<span class="c_punctuation">(</span><a class="link" href="GstCaps.html#GstCapsMapFunc" title="GstCapsMapFunc ()">*GstCapsMapFunc</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<span class="c_punctuation">(</span><a class="link" href="GstCaps.html#GstCapsFilterMapFunc" title="GstCapsFilterMapFunc ()">*GstCapsFilterMapFunc</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-new-empty" title="gst_caps_new_empty ()">gst_caps_new_empty</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-new-empty-simple" title="gst_caps_new_empty_simple ()">gst_caps_new_empty_simple</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-new-any" title="gst_caps_new_any ()">gst_caps_new_any</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-new-simple" title="gst_caps_new_simple ()">gst_caps_new_simple</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-new-full" title="gst_caps_new_full ()">gst_caps_new_full</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-new-full-valist" title="gst_caps_new_full_valist ()">gst_caps_new_full_valist</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-is-writable" title="gst_caps_is_writable()">gst_caps_is_writable</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-copy" title="gst_caps_copy ()">gst_caps_copy</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-copy-nth" title="gst_caps_copy_nth ()">gst_caps_copy_nth</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-static-caps-get" title="gst_static_caps_get ()">gst_static_caps_get</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-static-caps-cleanup" title="gst_static_caps_cleanup ()">gst_static_caps_cleanup</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-append" title="gst_caps_append ()">gst_caps_append</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-merge" title="gst_caps_merge ()">gst_caps_merge</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-append-structure" title="gst_caps_append_structure ()">gst_caps_append_structure</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-append-structure-full" title="gst_caps_append_structure_full ()">gst_caps_append_structure_full</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-remove-structure" title="gst_caps_remove_structure ()">gst_caps_remove_structure</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstStructure.html" title="GstStructure"><span class="returnvalue">GstStructure</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-steal-structure" title="gst_caps_steal_structure ()">gst_caps_steal_structure</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-merge-structure" title="gst_caps_merge_structure ()">gst_caps_merge_structure</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-merge-structure-full" title="gst_caps_merge_structure_full ()">gst_caps_merge_structure_full</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-get-size" title="gst_caps_get_size ()">gst_caps_get_size</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstStructure.html" title="GstStructure"><span class="returnvalue">GstStructure</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-get-structure" title="gst_caps_get_structure ()">gst_caps_get_structure</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="returnvalue">GstCapsFeatures</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-get-features" title="gst_caps_get_features ()">gst_caps_get_features</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-set-features" title="gst_caps_set_features ()">gst_caps_set_features</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-set-features-simple" title="gst_caps_set_features_simple ()">gst_caps_set_features_simple</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-set-value" title="gst_caps_set_value ()">gst_caps_set_value</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-set-simple" title="gst_caps_set_simple ()">gst_caps_set_simple</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-set-simple-valist" title="gst_caps_set_simple_valist ()">gst_caps_set_simple_valist</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-foreach" title="gst_caps_foreach ()">gst_caps_foreach</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-map-in-place" title="gst_caps_map_in_place ()">gst_caps_map_in_place</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-filter-and-map-in-place" title="gst_caps_filter_and_map_in_place ()">gst_caps_filter_and_map_in_place</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-is-any" title="gst_caps_is_any ()">gst_caps_is_any</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-is-empty" title="gst_caps_is_empty ()">gst_caps_is_empty</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-is-fixed" title="gst_caps_is_fixed ()">gst_caps_is_fixed</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-is-equal" title="gst_caps_is_equal ()">gst_caps_is_equal</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-is-equal-fixed" title="gst_caps_is_equal_fixed ()">gst_caps_is_equal_fixed</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-is-strictly-equal" title="gst_caps_is_strictly_equal ()">gst_caps_is_strictly_equal</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-is-always-compatible" title="gst_caps_is_always_compatible ()">gst_caps_is_always_compatible</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-is-subset" title="gst_caps_is_subset ()">gst_caps_is_subset</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-is-subset-structure" title="gst_caps_is_subset_structure ()">gst_caps_is_subset_structure</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-is-subset-structure-full" title="gst_caps_is_subset_structure_full ()">gst_caps_is_subset_structure_full</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-can-intersect" title="gst_caps_can_intersect ()">gst_caps_can_intersect</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-intersect" title="gst_caps_intersect ()">gst_caps_intersect</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-intersect-full" title="gst_caps_intersect_full ()">gst_caps_intersect_full</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-normalize" title="gst_caps_normalize ()">gst_caps_normalize</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-simplify" title="gst_caps_simplify ()">gst_caps_simplify</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-replace" title="gst_caps_replace ()">gst_caps_replace</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-take" title="gst_caps_take ()">gst_caps_take</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-to-string" title="gst_caps_to_string ()">gst_caps_to_string</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-from-string" title="gst_caps_from_string ()">gst_caps_from_string</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-subtract" title="gst_caps_subtract ()">gst_caps_subtract</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-make-writable" title="gst_caps_make_writable()">gst_caps_make_writable</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-truncate" title="gst_caps_truncate ()">gst_caps_truncate</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-fixate" title="gst_caps_fixate ()">gst_caps_fixate</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-ref" title="gst_caps_ref ()">gst_caps_ref</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-caps-unref" title="gst_caps_unref ()">gst_caps_unref</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GstCaps.html#gst-clear-caps" title="gst_clear_caps ()">gst_clear_caps</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GstCaps.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody>
<tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="GstCaps.html#GstCaps-struct" title="struct GstCaps">GstCaps</a></td>
</tr>
<tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="GstCaps.html#GstStaticCaps" title="struct GstStaticCaps">GstStaticCaps</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="GstCaps.html#GstCapsIntersectMode" title="enum GstCapsIntersectMode">GstCapsIntersectMode</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="GstCaps.html#GstCapsFlags" title="enum GstCapsFlags">GstCapsFlags</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="GstCaps.html#GST-CAPS-ANY:CAPS" title="GST_CAPS_ANY">GST_CAPS_ANY</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="GstCaps.html#GST-CAPS-NONE:CAPS" title="GST_CAPS_NONE">GST_CAPS_NONE</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="GstCaps.html#GST-STATIC-CAPS-ANY:CAPS" title="GST_STATIC_CAPS_ANY">GST_STATIC_CAPS_ANY</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="GstCaps.html#GST-STATIC-CAPS-NONE:CAPS" title="GST_STATIC_CAPS_NONE">GST_STATIC_CAPS_NONE</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GstCaps.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen">    <a href="/usr/share/gtk-doc/html/gobject/gobject-Boxed-Types.html">GBoxed</a>
    <span class="lineart">╰──</span> GstCaps
</pre>
</div>
<div class="refsect1">
<a name="GstCaps.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include &lt;gst/gst.h&gt;
</pre>
</div>
<div class="refsect1">
<a name="GstCaps.description"></a><h2>Description</h2>
<p>Caps (capabilities) are lightweight refcounted objects describing media types.
They are composed of an array of <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a>.</p>
<p>Caps are exposed on <a class="link" href="GstPadTemplate.html" title="GstPadTemplate"><span class="type">GstPadTemplate</span></a> to describe all possible types a
given pad can handle. They are also stored in the <a class="link" href="GstRegistry.html" title="GstRegistry"><span class="type">GstRegistry</span></a> along with
a description of the <a class="link" href="GstElement.html" title="GstElement"><span class="type">GstElement</span></a>.</p>
<p>Caps are exposed on the element pads using the <a class="link" href="GstPad.html#gst-pad-query-caps" title="gst_pad_query_caps ()"><code class="function">gst_pad_query_caps()</code></a> pad
function. This function describes the possible types that the pad can
handle or produce at runtime.</p>
<p>A <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> can be constructed with the following code fragment:</p>
<div class="informalexample">
  <table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
    <tbody>
      <tr>
        <td class="listing_lines" align="right"><pre>1
2
3
4
5
6
7</pre></td>
        <td class="listing_code"><pre class="programlisting">GstCaps <span class="gtkdoc opt">*</span>caps <span class="gtkdoc opt">=</span> <span class="function"><a href="GstCaps.html#gst-caps-new-simple">gst_caps_new_simple</a></span> <span class="gtkdoc opt">(</span><span class="string">&quot;video/x-raw&quot;</span><span class="gtkdoc opt">,</span>
   <span class="string">&quot;format&quot;</span><span class="gtkdoc opt">,</span> G_TYPE_STRING<span class="gtkdoc opt">,</span> <span class="string">&quot;I420&quot;</span><span class="gtkdoc opt">,</span>
   <span class="string">&quot;framerate&quot;</span><span class="gtkdoc opt">,</span> GST_TYPE_FRACTION<span class="gtkdoc opt">,</span> <span class="number">25</span><span class="gtkdoc opt">,</span> <span class="number">1</span><span class="gtkdoc opt">,</span>
   <span class="string">&quot;pixel-aspect-ratio&quot;</span><span class="gtkdoc opt">,</span> GST_TYPE_FRACTION<span class="gtkdoc opt">,</span> <span class="number">1</span><span class="gtkdoc opt">,</span> <span class="number">1</span><span class="gtkdoc opt">,</span>
   <span class="string">&quot;width&quot;</span><span class="gtkdoc opt">,</span> G_TYPE_INT<span class="gtkdoc opt">,</span> <span class="number">320</span><span class="gtkdoc opt">,</span>
   <span class="string">&quot;height&quot;</span><span class="gtkdoc opt">,</span> G_TYPE_INT<span class="gtkdoc opt">,</span> <span class="number">240</span><span class="gtkdoc opt">,</span>
   NULL<span class="gtkdoc opt">);</span></pre></td>
      </tr>
    </tbody>
  </table>
</div>

<p></p>
<p>A <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> is fixed when it has no properties with ranges or lists. Use
<a class="link" href="GstCaps.html#gst-caps-is-fixed" title="gst_caps_is_fixed ()"><code class="function">gst_caps_is_fixed()</code></a> to test for fixed caps. Fixed caps can be used in a
caps event to notify downstream elements of the current media type.</p>
<p>Various methods exist to work with the media types such as subtracting
or intersecting.</p>
<p>Be aware that the current <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> / <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> serialization into string
has limited support for nested <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> / <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> fields. It can only
support one level of nesting. Using more levels will lead to unexpected
behavior when using serialization features, such as <a class="link" href="GstCaps.html#gst-caps-to-string" title="gst_caps_to_string ()"><code class="function">gst_caps_to_string()</code></a> or
<a class="link" href="gstreamer-GstValue.html#gst-value-serialize" title="gst_value_serialize ()"><code class="function">gst_value_serialize()</code></a> and their counterparts.</p>
</div>
<div class="refsect1">
<a name="GstCaps.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="GST-CAPS-REFCOUNT:CAPS"></a><h3>GST_CAPS_REFCOUNT()</h3>
<pre class="programlisting">#define GST_CAPS_REFCOUNT(caps)                 GST_MINI_OBJECT_REFCOUNT(caps)
</pre>
<p>Get access to the reference count field of the caps</p>
<div class="refsect3">
<a name="GST-CAPS-REFCOUNT.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GST-CAPS-REFCOUNT-VALUE:CAPS"></a><h3>GST_CAPS_REFCOUNT_VALUE()</h3>
<pre class="programlisting">#define GST_CAPS_REFCOUNT_VALUE(caps)           GST_MINI_OBJECT_REFCOUNT_VALUE(caps)
</pre>
<p>Get the reference count value of the caps.</p>
<div class="refsect3">
<a name="GST-CAPS-REFCOUNT-VALUE.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GST-CAPS-IS-SIMPLE:CAPS"></a><h3>GST_CAPS_IS_SIMPLE()</h3>
<pre class="programlisting">#define GST_CAPS_IS_SIMPLE(caps) (gst_caps_get_size(caps) == 1)
</pre>
<p>Convenience macro that checks if the number of structures in the given caps
is exactly one.</p>
<div class="refsect3">
<a name="GST-CAPS-IS-SIMPLE.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> instance to check</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GST-STATIC-CAPS"></a><h3>GST_STATIC_CAPS()</h3>
<pre class="programlisting">#define             GST_STATIC_CAPS(string)</pre>
<p>Creates a new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> static caps from an input string.
This can be used in pad templates.</p>
<div class="refsect3">
<a name="GST-STATIC-CAPS.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>string</p></td>
<td class="parameter_description"><p>the string describing the caps</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GST-CAPS-FLAGS:CAPS"></a><h3>GST_CAPS_FLAGS()</h3>
<pre class="programlisting">#define GST_CAPS_FLAGS(caps)                    GST_MINI_OBJECT_FLAGS(caps)
</pre>
<p>A flags word containing <a class="link" href="GstCaps.html#GstCapsFlags" title="enum GstCapsFlags"><span class="type">GstCapsFlags</span></a> flags set on this caps.</p>
<div class="refsect3">
<a name="GST-CAPS-FLAGS.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GST-CAPS-FLAG-IS-SET:CAPS"></a><h3>GST_CAPS_FLAG_IS_SET()</h3>
<pre class="programlisting">#define GST_CAPS_FLAG_IS_SET(caps,flag)        GST_MINI_OBJECT_FLAG_IS_SET (caps, flag)
</pre>
<p>Gives the status of a specific flag on a caps.</p>
<div class="refsect3">
<a name="GST-CAPS-FLAG-IS-SET.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>flag</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html#GstCapsFlags" title="enum GstCapsFlags"><span class="type">GstCapsFlags</span></a> to check.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GST-CAPS-FLAG-SET:CAPS"></a><h3>GST_CAPS_FLAG_SET()</h3>
<pre class="programlisting">#define GST_CAPS_FLAG_SET(caps,flag)           GST_MINI_OBJECT_FLAG_SET (caps, flag)
</pre>
<p>Sets a caps flag on a caps.</p>
<div class="refsect3">
<a name="GST-CAPS-FLAG-SET.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>flag</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html#GstCapsFlags" title="enum GstCapsFlags"><span class="type">GstCapsFlags</span></a> to set.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GST-CAPS-FLAG-UNSET:CAPS"></a><h3>GST_CAPS_FLAG_UNSET()</h3>
<pre class="programlisting">#define GST_CAPS_FLAG_UNSET(caps,flag)         GST_MINI_OBJECT_FLAG_UNSET (caps, flag)
</pre>
<p>Clears a caps flag.</p>
<div class="refsect3">
<a name="GST-CAPS-FLAG-UNSET.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>flag</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html#GstCapsFlags" title="enum GstCapsFlags"><span class="type">GstCapsFlags</span></a> to clear.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GstCapsForeachFunc"></a><h3>GstCapsForeachFunc ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
<span class="c_punctuation">(</span>*GstCapsForeachFunc<span class="c_punctuation">)</span> (<em class="parameter"><code><a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> *features</code></em>,
                       <em class="parameter"><code><a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> *structure</code></em>,
                       <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre>
<p>A function that will be called in <a class="link" href="GstCaps.html#gst-caps-foreach" title="gst_caps_foreach ()"><code class="function">gst_caps_foreach()</code></a>. The function may
not modify <em class="parameter"><code>features</code></em>
 or <em class="parameter"><code>structure</code></em>
.</p>
<div class="refsect3">
<a name="GstCapsForeachFunc.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>features</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>structure</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="GstCapsForeachFunc.returns"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the foreach operation should continue, <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> if
the foreach operation should stop with <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a>.</p>
</div>
<p class="since">Since: <a class="link" href="ix07.html#api-index-1.6">1.6</a></p>
</div>
<hr>
<div class="refsect2">
<a name="GstCapsMapFunc"></a><h3>GstCapsMapFunc ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
<span class="c_punctuation">(</span>*GstCapsMapFunc<span class="c_punctuation">)</span> (<em class="parameter"><code><a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> *features</code></em>,
                   <em class="parameter"><code><a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> *structure</code></em>,
                   <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre>
<p>A function that will be called in <a class="link" href="GstCaps.html#gst-caps-map-in-place" title="gst_caps_map_in_place ()"><code class="function">gst_caps_map_in_place()</code></a>. The function
may modify <em class="parameter"><code>features</code></em>
 and <em class="parameter"><code>structure</code></em>
.</p>
<div class="refsect3">
<a name="GstCapsMapFunc.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>features</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>structure</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="GstCapsMapFunc.returns"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the map operation should continue, <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> if
the map operation should stop with <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a>.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GstCapsFilterMapFunc"></a><h3>GstCapsFilterMapFunc ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
<span class="c_punctuation">(</span>*GstCapsFilterMapFunc<span class="c_punctuation">)</span> (<em class="parameter"><code><a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> *features</code></em>,
                         <em class="parameter"><code><a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> *structure</code></em>,
                         <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre>
<p>A function that will be called in <a class="link" href="GstCaps.html#gst-caps-filter-and-map-in-place" title="gst_caps_filter_and_map_in_place ()"><code class="function">gst_caps_filter_and_map_in_place()</code></a>.
The function may modify <em class="parameter"><code>features</code></em>
 and <em class="parameter"><code>structure</code></em>
, and both will be
removed from the caps if <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> is returned.</p>
<div class="refsect3">
<a name="GstCapsFilterMapFunc.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>features</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>structure</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="GstCapsFilterMapFunc.returns"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the features and structure should be preserved,
<a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> if it should be removed.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-new-empty"></a><h3>gst_caps_new_empty ()</h3>
<pre class="programlisting"><a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
gst_caps_new_empty (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>Creates a new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> that is empty.  That is, the returned
<a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> contains no media formats.
The <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> is guaranteed to be writable.
Caller is responsible for unreffing the returned caps.</p>
<div class="refsect3">
<a name="gst-caps-new-empty.returns"></a><h4>Returns</h4>
<p>the new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-new-empty-simple"></a><h3>gst_caps_new_empty_simple ()</h3>
<pre class="programlisting"><a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
gst_caps_new_empty_simple (<em class="parameter"><code>const <span class="type">char</span> *media_type</code></em>);</pre>
<p>Creates a new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> that contains one <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> with name
<em class="parameter"><code>media_type</code></em>
.
Caller is responsible for unreffing the returned caps.</p>
<div class="refsect3">
<a name="gst-caps-new-empty-simple.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>media_type</p></td>
<td class="parameter_description"><p>the media type of the structure</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-new-empty-simple.returns"></a><h4>Returns</h4>
<p>the new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-new-any"></a><h3>gst_caps_new_any ()</h3>
<pre class="programlisting"><a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
gst_caps_new_any (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>Creates a new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> that indicates that it is compatible with
any media format.</p>
<div class="refsect3">
<a name="gst-caps-new-any.returns"></a><h4>Returns</h4>
<p>the new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-new-simple"></a><h3>gst_caps_new_simple ()</h3>
<pre class="programlisting"><a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
gst_caps_new_simple (<em class="parameter"><code>const <span class="type">char</span> *media_type</code></em>,
                     <em class="parameter"><code>const <span class="type">char</span> *fieldname</code></em>,
                     <em class="parameter"><code>...</code></em>);</pre>
<p>Creates a new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> that contains one <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a>.  The
structure is defined by the arguments, which have the same format
as <a class="link" href="GstStructure.html#gst-structure-new" title="gst_structure_new ()"><code class="function">gst_structure_new()</code></a>.
Caller is responsible for unreffing the returned caps.</p>
<div class="refsect3">
<a name="gst-caps-new-simple.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>media_type</p></td>
<td class="parameter_description"><p>the media type of the structure</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>fieldname</p></td>
<td class="parameter_description"><p>first field to set</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>...</p></td>
<td class="parameter_description"><p>additional arguments</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-new-simple.returns"></a><h4>Returns</h4>
<p>the new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-new-full"></a><h3>gst_caps_new_full ()</h3>
<pre class="programlisting"><a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
gst_caps_new_full (<em class="parameter"><code><a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> *struct1</code></em>,
                   <em class="parameter"><code>...</code></em>);</pre>
<p>Creates a new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> and adds all the structures listed as
arguments.  The list must be <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>-terminated.  The structures
are not copied; the returned <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> owns the structures.</p>
<div class="refsect3">
<a name="gst-caps-new-full.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>struct1</p></td>
<td class="parameter_description"><p>the first structure to add</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>...</p></td>
<td class="parameter_description"><p>additional structures to add</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-new-full.returns"></a><h4>Returns</h4>
<p>the new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-new-full-valist"></a><h3>gst_caps_new_full_valist ()</h3>
<pre class="programlisting"><a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
gst_caps_new_full_valist (<em class="parameter"><code><a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> *structure</code></em>,
                          <em class="parameter"><code><span class="type">va_list</span> var_args</code></em>);</pre>
<p>Creates a new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> and adds all the structures listed as
arguments.  The list must be <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>-terminated.  The structures
are not copied; the returned <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> owns the structures.</p>
<div class="refsect3">
<a name="gst-caps-new-full-valist.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>structure</p></td>
<td class="parameter_description"><p>the first structure to add</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>var_args</p></td>
<td class="parameter_description"><p>additional structures to add</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-new-full-valist.returns"></a><h4>Returns</h4>
<p>the new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-is-writable"></a><h3>gst_caps_is_writable()</h3>
<pre class="programlisting">#define         gst_caps_is_writable(caps)     gst_mini_object_is_writable (GST_MINI_OBJECT_CAST (caps))
</pre>
<p>Tests if you can safely modify <em class="parameter"><code>caps</code></em>
. It is only safe to modify caps when
there is only one owner of the caps - ie, the object is writable.</p>
<div class="refsect3">
<a name="gst-caps-is-writable.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-copy"></a><h3>gst_caps_copy ()</h3>
<pre class="programlisting"><a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
gst_caps_copy (<em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>);</pre>
<p>Creates a new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> as a copy of the old <em class="parameter"><code>caps</code></em>
. The new caps will have a
refcount of 1, owned by the caller. The structures are copied as well.</p>
<p>Note that this function is the semantic equivalent of a <a class="link" href="GstCaps.html#gst-caps-ref" title="gst_caps_ref ()"><code class="function">gst_caps_ref()</code></a>
followed by a <a class="link" href="GstCaps.html#gst-caps-make-writable" title="gst_caps_make_writable()"><code class="function">gst_caps_make_writable()</code></a>. If you only want to hold on to a
reference to the data, you should use <a class="link" href="GstCaps.html#gst-caps-ref" title="gst_caps_ref ()"><code class="function">gst_caps_ref()</code></a>.</p>
<p>When you are finished with the caps, call <a class="link" href="GstCaps.html#gst-caps-unref" title="gst_caps_unref ()"><code class="function">gst_caps_unref()</code></a> on it.</p>
<div class="refsect3">
<a name="gst-caps-copy.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-copy.returns"></a><h4>Returns</h4>
<p> the new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-copy-nth"></a><h3>gst_caps_copy_nth ()</h3>
<pre class="programlisting"><a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
gst_caps_copy_nth (<em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
                   <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> nth</code></em>);</pre>
<p>Creates a new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> and appends a copy of the nth structure
contained in <em class="parameter"><code>caps</code></em>
.</p>
<div class="refsect3">
<a name="gst-caps-copy-nth.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to copy</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>nth</p></td>
<td class="parameter_description"><p>the nth structure to copy</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-copy-nth.returns"></a><h4>Returns</h4>
<p>the new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
<p class="since">Since: 1.16</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-static-caps-get"></a><h3>gst_static_caps_get ()</h3>
<pre class="programlisting"><a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
gst_static_caps_get (<em class="parameter"><code><a class="link" href="GstCaps.html#GstStaticCaps" title="struct GstStaticCaps"><span class="type">GstStaticCaps</span></a> *static_caps</code></em>);</pre>
<p>Converts a <a class="link" href="GstCaps.html#GstStaticCaps" title="struct GstStaticCaps"><span class="type">GstStaticCaps</span></a> to a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>.</p>
<div class="refsect3">
<a name="gst-static-caps-get.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>static_caps</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html#GstStaticCaps" title="struct GstStaticCaps"><span class="type">GstStaticCaps</span></a> to convert</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-static-caps-get.returns"></a><h4>Returns</h4>
<p>a pointer to the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>. Unref
after usage. Since the core holds an additional ref to the
returned caps, use <a class="link" href="GstCaps.html#gst-caps-make-writable" title="gst_caps_make_writable()"><code class="function">gst_caps_make_writable()</code></a> on the returned caps
to modify it. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>][<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-static-caps-cleanup"></a><h3>gst_static_caps_cleanup ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_static_caps_cleanup (<em class="parameter"><code><a class="link" href="GstCaps.html#GstStaticCaps" title="struct GstStaticCaps"><span class="type">GstStaticCaps</span></a> *static_caps</code></em>);</pre>
<p>Clean up the cached caps contained in <em class="parameter"><code>static_caps</code></em>
.</p>
<div class="refsect3">
<a name="gst-static-caps-cleanup.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>static_caps</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html#GstStaticCaps" title="struct GstStaticCaps"><span class="type">GstStaticCaps</span></a> to clean</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-append"></a><h3>gst_caps_append ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_caps_append (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps1</code></em>,
                 <em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps2</code></em>);</pre>
<p>Appends the structures contained in <em class="parameter"><code>caps2</code></em>
 to <em class="parameter"><code>caps1</code></em>
. The structures in
<em class="parameter"><code>caps2</code></em>
 are not copied -- they are transferred to <em class="parameter"><code>caps1</code></em>
, and then <em class="parameter"><code>caps2</code></em>
 is
freed. If either caps is ANY, the resulting caps will be ANY.</p>
<div class="refsect3">
<a name="gst-caps-append.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps1</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> that will be appended to</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>caps2</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to append. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-merge"></a><h3>gst_caps_merge ()</h3>
<pre class="programlisting"><a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
gst_caps_merge (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps1</code></em>,
                <em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps2</code></em>);</pre>
<p>Appends the structures contained in <em class="parameter"><code>caps2</code></em>
 to <em class="parameter"><code>caps1</code></em>
 if they are not yet
expressed by <em class="parameter"><code>caps1</code></em>
. The structures in <em class="parameter"><code>caps2</code></em>
 are not copied -- they are
transferred to a writable copy of <em class="parameter"><code>caps1</code></em>
, and then <em class="parameter"><code>caps2</code></em>
 is freed.
If either caps is ANY, the resulting caps will be ANY.</p>
<div class="refsect3">
<a name="gst-caps-merge.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps1</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> that will take the new entries. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>caps2</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to merge in. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-merge.returns"></a><h4>Returns</h4>
<p>the merged caps. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-append-structure"></a><h3>gst_caps_append_structure ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_caps_append_structure (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
                           <em class="parameter"><code><a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> *structure</code></em>);</pre>
<p>Appends <em class="parameter"><code>structure</code></em>
 to <em class="parameter"><code>caps</code></em>
.  The structure is not copied; <em class="parameter"><code>caps</code></em>

becomes the owner of <em class="parameter"><code>structure</code></em>
.</p>
<div class="refsect3">
<a name="gst-caps-append-structure.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> that will be appended to</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>structure</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> to append. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-append-structure-full"></a><h3>gst_caps_append_structure_full ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_caps_append_structure_full (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
                                <em class="parameter"><code><a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> *structure</code></em>,
                                <em class="parameter"><code><a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> *features</code></em>);</pre>
<p>Appends <em class="parameter"><code>structure</code></em>
 with <em class="parameter"><code>features</code></em>
 to <em class="parameter"><code>caps</code></em>
.  The structure is not copied; <em class="parameter"><code>caps</code></em>

becomes the owner of <em class="parameter"><code>structure</code></em>
.</p>
<div class="refsect3">
<a name="gst-caps-append-structure-full.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> that will be appended to</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>structure</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> to append. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>features</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> to append. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>][<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="ix10.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-remove-structure"></a><h3>gst_caps_remove_structure ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_caps_remove_structure (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
                           <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> idx</code></em>);</pre>
<p>removes the structure with the given index from the list of structures
contained in <em class="parameter"><code>caps</code></em>
.</p>
<div class="refsect3">
<a name="gst-caps-remove-structure.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to remove from</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>idx</p></td>
<td class="parameter_description"><p>Index of the structure to remove</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-steal-structure"></a><h3>gst_caps_steal_structure ()</h3>
<pre class="programlisting"><a class="link" href="GstStructure.html" title="GstStructure"><span class="returnvalue">GstStructure</span></a> *
gst_caps_steal_structure (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
                          <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> index</code></em>);</pre>
<p>Retrieves the structure with the given index from the list of structures
contained in <em class="parameter"><code>caps</code></em>
. The caller becomes the owner of the returned structure.</p>
<div class="refsect3">
<a name="gst-caps-steal-structure.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to retrieve from</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>index</p></td>
<td class="parameter_description"><p>Index of the structure to retrieve</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-steal-structure.returns"></a><h4>Returns</h4>
<p>a pointer to the <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a>
corresponding to <em class="parameter"><code>index</code></em>
. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>][<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-merge-structure"></a><h3>gst_caps_merge_structure ()</h3>
<pre class="programlisting"><a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
gst_caps_merge_structure (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
                          <em class="parameter"><code><a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> *structure</code></em>);</pre>
<p>Appends <em class="parameter"><code>structure</code></em>
 to <em class="parameter"><code>caps</code></em>
 if its not already expressed by <em class="parameter"><code>caps</code></em>
.</p>
<div class="refsect3">
<a name="gst-caps-merge-structure.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to merge into. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>structure</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> to merge. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-merge-structure.returns"></a><h4>Returns</h4>
<p>the merged caps. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-merge-structure-full"></a><h3>gst_caps_merge_structure_full ()</h3>
<pre class="programlisting"><a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
gst_caps_merge_structure_full (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
                               <em class="parameter"><code><a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> *structure</code></em>,
                               <em class="parameter"><code><a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> *features</code></em>);</pre>
<p>Appends <em class="parameter"><code>structure</code></em>
 with <em class="parameter"><code>features</code></em>
 to <em class="parameter"><code>caps</code></em>
 if its not already expressed by <em class="parameter"><code>caps</code></em>
.</p>
<div class="refsect3">
<a name="gst-caps-merge-structure-full.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to merge into. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>structure</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> to merge. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>features</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> to merge. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>][<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-merge-structure-full.returns"></a><h4>Returns</h4>
<p>the merged caps. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="ix10.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-get-size"></a><h3>gst_caps_get_size ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a>
gst_caps_get_size (<em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>);</pre>
<p>Gets the number of structures contained in <em class="parameter"><code>caps</code></em>
.</p>
<div class="refsect3">
<a name="gst-caps-get-size.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-get-size.returns"></a><h4>Returns</h4>
<p> the number of structures that <em class="parameter"><code>caps</code></em>
contains</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-get-structure"></a><h3>gst_caps_get_structure ()</h3>
<pre class="programlisting"><a class="link" href="GstStructure.html" title="GstStructure"><span class="returnvalue">GstStructure</span></a> *
gst_caps_get_structure (<em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
                        <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> index</code></em>);</pre>
<p>Finds the structure in <em class="parameter"><code>caps</code></em>
 that has the index <em class="parameter"><code>index</code></em>
, and
returns it.</p>
<p>WARNING: This function takes a const GstCaps *, but returns a
non-const GstStructure *.  This is for programming convenience --
the caller should be aware that structures inside a constant
<a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> should not be modified. However, if you know the caps
are writable, either because you have just copied them or made
them writable with <a class="link" href="GstCaps.html#gst-caps-make-writable" title="gst_caps_make_writable()"><code class="function">gst_caps_make_writable()</code></a>, you may modify the
structure returned in the usual way, e.g. with functions like
<a class="link" href="GstStructure.html#gst-structure-set" title="gst_structure_set ()"><code class="function">gst_structure_set()</code></a>.</p>
<p>You do not need to free or unref the structure returned, it
belongs to the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>.</p>
<div class="refsect3">
<a name="gst-caps-get-structure.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>index</p></td>
<td class="parameter_description"><p>the index of the structure</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-get-structure.returns"></a><h4>Returns</h4>
<p>a pointer to the <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> corresponding
to <em class="parameter"><code>index</code></em>
. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-get-features"></a><h3>gst_caps_get_features ()</h3>
<pre class="programlisting"><a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="returnvalue">GstCapsFeatures</span></a> *
gst_caps_get_features (<em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
                       <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> index</code></em>);</pre>
<p>Finds the features in <em class="parameter"><code>caps</code></em>
 that has the index <em class="parameter"><code>index</code></em>
, and
returns it.</p>
<p>WARNING: This function takes a const GstCaps *, but returns a
non-const GstCapsFeatures *.  This is for programming convenience --
the caller should be aware that structures inside a constant
<a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> should not be modified. However, if you know the caps
are writable, either because you have just copied them or made
them writable with <a class="link" href="GstCaps.html#gst-caps-make-writable" title="gst_caps_make_writable()"><code class="function">gst_caps_make_writable()</code></a>, you may modify the
features returned in the usual way, e.g. with functions like
<a class="link" href="GstCapsFeatures.html#gst-caps-features-add" title="gst_caps_features_add ()"><code class="function">gst_caps_features_add()</code></a>.</p>
<p>You do not need to free or unref the structure returned, it
belongs to the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>.</p>
<div class="refsect3">
<a name="gst-caps-get-features.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>index</p></td>
<td class="parameter_description"><p>the index of the structure</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-get-features.returns"></a><h4>Returns</h4>
<p>a pointer to the <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a>
corresponding to <em class="parameter"><code>index</code></em>
. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>][<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="ix10.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-set-features"></a><h3>gst_caps_set_features ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_caps_set_features (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
                       <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> index</code></em>,
                       <em class="parameter"><code><a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> *features</code></em>);</pre>
<p>Sets the <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> <em class="parameter"><code>features</code></em>
 for the structure at <em class="parameter"><code>index</code></em>
.</p>
<div class="refsect3">
<a name="gst-caps-set-features.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>index</p></td>
<td class="parameter_description"><p>the index of the structure</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>features</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> to set. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>][<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="ix10.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-set-features-simple"></a><h3>gst_caps_set_features_simple ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_caps_set_features_simple (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
                              <em class="parameter"><code><a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> *features</code></em>);</pre>
<p>Sets the <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> <em class="parameter"><code>features</code></em>
 for all the structures of <em class="parameter"><code>caps</code></em>
.</p>
<div class="refsect3">
<a name="gst-caps-set-features-simple.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>features</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> to set. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>][<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: 1.16</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-set-value"></a><h3>gst_caps_set_value ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_caps_set_value (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
                    <em class="parameter"><code>const <span class="type">char</span> *field</code></em>,
                    <em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/gobject/gobject-Generic-values.html#GValue-struct"><span class="type">GValue</span></a> *value</code></em>);</pre>
<p>Sets the given <em class="parameter"><code>field</code></em>
 on all structures of <em class="parameter"><code>caps</code></em>
 to the given <em class="parameter"><code>value</code></em>
.
This is a convenience function for calling <a class="link" href="GstStructure.html#gst-structure-set-value" title="gst_structure_set_value ()"><code class="function">gst_structure_set_value()</code></a> on
all structures of <em class="parameter"><code>caps</code></em>
.</p>
<div class="refsect3">
<a name="gst-caps-set-value.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a writable caps</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>field</p></td>
<td class="parameter_description"><p>name of the field to set</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>value</p></td>
<td class="parameter_description"><p>value to set the field to</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-set-simple"></a><h3>gst_caps_set_simple ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_caps_set_simple (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
                     <em class="parameter"><code>const <span class="type">char</span> *field</code></em>,
                     <em class="parameter"><code>...</code></em>);</pre>
<p>Sets fields in a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>.  The arguments must be passed in the same
manner as <a class="link" href="GstStructure.html#gst-structure-set" title="gst_structure_set ()"><code class="function">gst_structure_set()</code></a>, and be <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>-terminated.</p>
<div class="refsect3">
<a name="gst-caps-set-simple.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to set</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>field</p></td>
<td class="parameter_description"><p>first field to set</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>...</p></td>
<td class="parameter_description"><p>additional parameters</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-set-simple-valist"></a><h3>gst_caps_set_simple_valist ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_caps_set_simple_valist (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
                            <em class="parameter"><code>const <span class="type">char</span> *field</code></em>,
                            <em class="parameter"><code><span class="type">va_list</span> varargs</code></em>);</pre>
<p>Sets fields in a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>.  The arguments must be passed in the same
manner as <a class="link" href="GstStructure.html#gst-structure-set" title="gst_structure_set ()"><code class="function">gst_structure_set()</code></a>, and be <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>-terminated.</p>
<div class="refsect3">
<a name="gst-caps-set-simple-valist.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to set</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>field</p></td>
<td class="parameter_description"><p>first field to set</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>varargs</p></td>
<td class="parameter_description"><p>additional parameters</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-foreach"></a><h3>gst_caps_foreach ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_caps_foreach (<em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
                  <em class="parameter"><code><a class="link" href="GstCaps.html#GstCapsForeachFunc" title="GstCapsForeachFunc ()"><span class="type">GstCapsForeachFunc</span></a> func</code></em>,
                  <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre>
<p>Calls the provided function once for each structure and caps feature in the
<a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>. The function must not modify the fields.
Also see <a class="link" href="GstCaps.html#gst-caps-map-in-place" title="gst_caps_map_in_place ()"><code class="function">gst_caps_map_in_place()</code></a> and <a class="link" href="GstCaps.html#gst-caps-filter-and-map-in-place" title="gst_caps_filter_and_map_in_place ()"><code class="function">gst_caps_filter_and_map_in_place()</code></a>.</p>
<div class="refsect3">
<a name="gst-caps-foreach.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>func</p></td>
<td class="parameter_description"><p>a function to call for each field. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="The callback is valid only during the call to the method."><span class="acronym">scope call</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>private data. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-foreach.returns"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the supplied function returns <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> for each call,
<a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise.</p>
</div>
<p class="since">Since: <a class="link" href="ix07.html#api-index-1.6">1.6</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-map-in-place"></a><h3>gst_caps_map_in_place ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_caps_map_in_place (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
                       <em class="parameter"><code><a class="link" href="GstCaps.html#GstCapsMapFunc" title="GstCapsMapFunc ()"><span class="type">GstCapsMapFunc</span></a> func</code></em>,
                       <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre>
<p>Calls the provided function once for each structure and caps feature in the
<a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>. In contrast to <a class="link" href="GstCaps.html#gst-caps-foreach" title="gst_caps_foreach ()"><code class="function">gst_caps_foreach()</code></a>, the function may modify but not
delete the structures and features. The caps must be mutable.</p>
<div class="refsect3">
<a name="gst-caps-map-in-place.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>func</p></td>
<td class="parameter_description"><p>a function to call for each field. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="The callback is valid only during the call to the method."><span class="acronym">scope call</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>private data. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-map-in-place.returns"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the supplied function returns <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> for each call,
<a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise.</p>
</div>
<p class="since">Since: <a class="link" href="ix07.html#api-index-1.6">1.6</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-filter-and-map-in-place"></a><h3>gst_caps_filter_and_map_in_place ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_caps_filter_and_map_in_place (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
                                  <em class="parameter"><code><a class="link" href="GstCaps.html#GstCapsFilterMapFunc" title="GstCapsFilterMapFunc ()"><span class="type">GstCapsFilterMapFunc</span></a> func</code></em>,
                                  <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre>
<p>Calls the provided function once for each structure and caps feature in the
<a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>. In contrast to <a class="link" href="GstCaps.html#gst-caps-foreach" title="gst_caps_foreach ()"><code class="function">gst_caps_foreach()</code></a>, the function may modify the
structure and features. In contrast to <a class="link" href="GstCaps.html#gst-caps-filter-and-map-in-place" title="gst_caps_filter_and_map_in_place ()"><code class="function">gst_caps_filter_and_map_in_place()</code></a>,
the structure and features are removed from the caps if <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> is returned
from the function.
The caps must be mutable.</p>
<div class="refsect3">
<a name="gst-caps-filter-and-map-in-place.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>func</p></td>
<td class="parameter_description"><p>a function to call for each field. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="The callback is valid only during the call to the method."><span class="acronym">scope call</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>private data. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="ix07.html#api-index-1.6">1.6</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-is-any"></a><h3>gst_caps_is_any ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_caps_is_any (<em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>);</pre>
<p>Determines if <em class="parameter"><code>caps</code></em>
 represents any media format.</p>
<div class="refsect3">
<a name="gst-caps-is-any.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to test</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-is-any.returns"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>caps</code></em>
represents any format.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-is-empty"></a><h3>gst_caps_is_empty ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_caps_is_empty (<em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>);</pre>
<p>Determines if <em class="parameter"><code>caps</code></em>
 represents no media formats.</p>
<div class="refsect3">
<a name="gst-caps-is-empty.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to test</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-is-empty.returns"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>caps</code></em>
represents no formats.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-is-fixed"></a><h3>gst_caps_is_fixed ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_caps_is_fixed (<em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>);</pre>
<p>Fixed <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> describe exactly one format, that is, they have exactly
one structure, and each field in the structure describes a fixed type.
Examples of non-fixed types are GST_TYPE_INT_RANGE and GST_TYPE_LIST.</p>
<div class="refsect3">
<a name="gst-caps-is-fixed.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to test</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-is-fixed.returns"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>caps</code></em>
is fixed</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-is-equal"></a><h3>gst_caps_is_equal ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_caps_is_equal (<em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps1</code></em>,
                   <em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps2</code></em>);</pre>
<p>Checks if the given caps represent the same set of caps.</p>
<div class="refsect3">
<a name="gst-caps-is-equal.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps1</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>caps2</p></td>
<td class="parameter_description"><p>another <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-is-equal.returns"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if both caps are equal.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-is-equal-fixed"></a><h3>gst_caps_is_equal_fixed ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_caps_is_equal_fixed (<em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps1</code></em>,
                         <em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps2</code></em>);</pre>
<p>Tests if two <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> are equal.  This function only works on fixed
<a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>.</p>
<div class="refsect3">
<a name="gst-caps-is-equal-fixed.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps1</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to test</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>caps2</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to test</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-is-equal-fixed.returns"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the arguments represent the same format</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-is-strictly-equal"></a><h3>gst_caps_is_strictly_equal ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_caps_is_strictly_equal (<em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps1</code></em>,
                            <em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps2</code></em>);</pre>
<p>Checks if the given caps are exactly the same set of caps.</p>
<div class="refsect3">
<a name="gst-caps-is-strictly-equal.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps1</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>caps2</p></td>
<td class="parameter_description"><p>another <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-is-strictly-equal.returns"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if both caps are strictly equal.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-is-always-compatible"></a><h3>gst_caps_is_always_compatible ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_caps_is_always_compatible (<em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps1</code></em>,
                               <em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps2</code></em>);</pre>
<p>A given <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> structure is always compatible with another if
every media format that is in the first is also contained in the
second.  That is, <em class="parameter"><code>caps1</code></em>
 is a subset of <em class="parameter"><code>caps2</code></em>
.</p>
<div class="refsect3">
<a name="gst-caps-is-always-compatible.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps1</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to test</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>caps2</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to test</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-is-always-compatible.returns"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>caps1</code></em>
is a subset of <em class="parameter"><code>caps2</code></em>
.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-is-subset"></a><h3>gst_caps_is_subset ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_caps_is_subset (<em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *subset</code></em>,
                    <em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *superset</code></em>);</pre>
<p>Checks if all caps represented by <em class="parameter"><code>subset</code></em>
 are also represented by <em class="parameter"><code>superset</code></em>
.</p>
<div class="refsect3">
<a name="gst-caps-is-subset.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>subset</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>superset</p></td>
<td class="parameter_description"><p>a potentially greater <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-is-subset.returns"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>subset</code></em>
is a subset of <em class="parameter"><code>superset</code></em>
</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-is-subset-structure"></a><h3>gst_caps_is_subset_structure ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_caps_is_subset_structure (<em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
                              <em class="parameter"><code>const <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> *structure</code></em>);</pre>
<p>Checks if <em class="parameter"><code>structure</code></em>
 is a subset of <em class="parameter"><code>caps</code></em>
. See <a class="link" href="GstCaps.html#gst-caps-is-subset" title="gst_caps_is_subset ()"><code class="function">gst_caps_is_subset()</code></a>
for more information.</p>
<div class="refsect3">
<a name="gst-caps-is-subset-structure.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>structure</p></td>
<td class="parameter_description"><p>a potential <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> subset of <em class="parameter"><code>caps</code></em>
</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-is-subset-structure.returns"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>structure</code></em>
is a subset of <em class="parameter"><code>caps</code></em>
</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-is-subset-structure-full"></a><h3>gst_caps_is_subset_structure_full ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_caps_is_subset_structure_full (<em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
                                   <em class="parameter"><code>const <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> *structure</code></em>,
                                   <em class="parameter"><code>const <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> *features</code></em>);</pre>
<p>Checks if <em class="parameter"><code>structure</code></em>
 is a subset of <em class="parameter"><code>caps</code></em>
. See <a class="link" href="GstCaps.html#gst-caps-is-subset" title="gst_caps_is_subset ()"><code class="function">gst_caps_is_subset()</code></a>
for more information.</p>
<div class="refsect3">
<a name="gst-caps-is-subset-structure-full.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>structure</p></td>
<td class="parameter_description"><p>a potential <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> subset of <em class="parameter"><code>caps</code></em>
</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>features</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCapsFeatures.html" title="GstCapsFeatures"><span class="type">GstCapsFeatures</span></a> for <em class="parameter"><code>structure</code></em>
. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-is-subset-structure-full.returns"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>structure</code></em>
is a subset of <em class="parameter"><code>caps</code></em>
</p>
</div>
<p class="since">Since: <a class="link" href="ix10.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-can-intersect"></a><h3>gst_caps_can_intersect ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_caps_can_intersect (<em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps1</code></em>,
                        <em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps2</code></em>);</pre>
<p>Tries intersecting <em class="parameter"><code>caps1</code></em>
 and <em class="parameter"><code>caps2</code></em>
 and reports whether the result would not
be empty</p>
<div class="refsect3">
<a name="gst-caps-can-intersect.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps1</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to intersect</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>caps2</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to intersect</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-can-intersect.returns"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if intersection would be not empty</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-intersect"></a><h3>gst_caps_intersect ()</h3>
<pre class="programlisting"><a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
gst_caps_intersect (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps1</code></em>,
                    <em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps2</code></em>);</pre>
<p>Creates a new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> that contains all the formats that are common
to both <em class="parameter"><code>caps1</code></em>
 and <em class="parameter"><code>caps2</code></em>
. Defaults to <a class="link" href="GstCaps.html#GST-CAPS-INTERSECT-ZIG-ZAG:CAPS"><code class="literal">GST_CAPS_INTERSECT_ZIG_ZAG</code></a> mode.</p>
<div class="refsect3">
<a name="gst-caps-intersect.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps1</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to intersect</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>caps2</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to intersect</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-intersect.returns"></a><h4>Returns</h4>
<p>the new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-intersect-full"></a><h3>gst_caps_intersect_full ()</h3>
<pre class="programlisting"><a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
gst_caps_intersect_full (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps1</code></em>,
                         <em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps2</code></em>,
                         <em class="parameter"><code><a class="link" href="GstCaps.html#GstCapsIntersectMode" title="enum GstCapsIntersectMode"><span class="type">GstCapsIntersectMode</span></a> mode</code></em>);</pre>
<p>Creates a new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> that contains all the formats that are common
to both <em class="parameter"><code>caps1</code></em>
 and <em class="parameter"><code>caps2</code></em>
, the order is defined by the <a class="link" href="GstCaps.html#GstCapsIntersectMode" title="enum GstCapsIntersectMode"><span class="type">GstCapsIntersectMode</span></a>
used.</p>
<div class="refsect3">
<a name="gst-caps-intersect-full.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps1</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to intersect</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>caps2</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to intersect</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>mode</p></td>
<td class="parameter_description"><p>The intersection algorithm/mode to use</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-intersect-full.returns"></a><h4>Returns</h4>
<p>the new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-normalize"></a><h3>gst_caps_normalize ()</h3>
<pre class="programlisting"><a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
gst_caps_normalize (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>);</pre>
<p>Returns a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> that represents the same set of formats as
<em class="parameter"><code>caps</code></em>
, but contains no lists.  Each list is expanded into separate
<em class="parameter"><code>GstStructures</code></em>
.</p>
<p>This function takes ownership of <em class="parameter"><code>caps</code></em>
 and will call <a class="link" href="GstCaps.html#gst-caps-make-writable" title="gst_caps_make_writable()"><code class="function">gst_caps_make_writable()</code></a>
on it so you must not use <em class="parameter"><code>caps</code></em>
 afterwards unless you keep an additional
reference to it with <a class="link" href="GstCaps.html#gst-caps-ref" title="gst_caps_ref ()"><code class="function">gst_caps_ref()</code></a>.</p>
<div class="refsect3">
<a name="gst-caps-normalize.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to normalize. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-normalize.returns"></a><h4>Returns</h4>
<p>the normalized <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-simplify"></a><h3>gst_caps_simplify ()</h3>
<pre class="programlisting"><a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
gst_caps_simplify (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>);</pre>
<p>Converts the given <em class="parameter"><code>caps</code></em>
 into a representation that represents the
same set of formats, but in a simpler form.  Component structures that are
identical are merged.  Component structures that have values that can be
merged are also merged.</p>
<p>This function takes ownership of <em class="parameter"><code>caps</code></em>
 and will call <a class="link" href="GstCaps.html#gst-caps-make-writable" title="gst_caps_make_writable()"><code class="function">gst_caps_make_writable()</code></a>
on it if necessary, so you must not use <em class="parameter"><code>caps</code></em>
 afterwards unless you keep an
additional reference to it with <a class="link" href="GstCaps.html#gst-caps-ref" title="gst_caps_ref ()"><code class="function">gst_caps_ref()</code></a>.</p>
<p>This method does not preserve the original order of <em class="parameter"><code>caps</code></em>
.</p>
<div class="refsect3">
<a name="gst-caps-simplify.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to simplify. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-simplify.returns"></a><h4>Returns</h4>
<p>The simplified caps. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-replace"></a><h3>gst_caps_replace ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_caps_replace (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> **old_caps</code></em>,
                  <em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *new_caps</code></em>);</pre>
<p>Modifies a pointer to a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to point to a different <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>. The
modification is done atomically (so this is useful for ensuring thread safety
in some cases), and the reference counts are updated appropriately (the old
caps is unreffed, the new is reffed).</p>
<p>Either <em class="parameter"><code>new_caps</code></em>
 or the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> pointed to by <em class="parameter"><code>old_caps</code></em>
 may be <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>.</p>
<div class="refsect3">
<a name="gst-caps-replace.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>old_caps</p></td>
<td class="parameter_description"><p>pointer to a pointer
to a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to be replaced. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for input and for returning results. Default is transfer full."><span class="acronym">inout</span></acronym>][<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>][<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>new_caps</p></td>
<td class="parameter_description"><p>pointer to a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> that will
replace the caps pointed to by <em class="parameter"><code>old_caps</code></em>
. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>][<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-replace.returns"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>new_caps</code></em>
was different from <em class="parameter"><code>old_caps</code></em>
</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-take"></a><h3>gst_caps_take ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_caps_take (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> **old_caps</code></em>,
               <em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *new_caps</code></em>);</pre>
<p>Modifies a pointer to a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to point to a different <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>. This
function is similar to <a class="link" href="GstCaps.html#gst-caps-replace" title="gst_caps_replace ()"><code class="function">gst_caps_replace()</code></a> except that it takes ownership
of <em class="parameter"><code>new_caps</code></em>
.</p>
<div class="refsect3">
<a name="gst-caps-take.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>old_caps</p></td>
<td class="parameter_description"><p>pointer to a pointer to a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to be
replaced. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for input and for returning results. Default is transfer full."><span class="acronym">inout</span></acronym>][<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>new_caps</p></td>
<td class="parameter_description"><p>pointer to a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> that will
replace the caps pointed to by <em class="parameter"><code>old_caps</code></em>
. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>][<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-take.returns"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>new_caps</code></em>
was different from <em class="parameter"><code>old_caps</code></em>
</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-to-string"></a><h3>gst_caps_to_string ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
gst_caps_to_string (<em class="parameter"><code>const <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>);</pre>
<p>Converts <em class="parameter"><code>caps</code></em>
 to a string representation.  This string representation
can be converted back to a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> by <a class="link" href="GstCaps.html#gst-caps-from-string" title="gst_caps_from_string ()"><code class="function">gst_caps_from_string()</code></a>.</p>
<p>For debugging purposes its easier to do something like this:</p>
<div class="informalexample">
  <table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
    <tbody>
      <tr>
        <td class="listing_lines" align="right"><pre>1</pre></td>
        <td class="listing_code"><pre class="programlisting"><span class="function"><a href="gstreamer-GstInfo.html#GST-LOG:CAPS">GST_LOG</a></span> <span class="gtkdoc opt">(</span><span class="string">&quot;caps are %&quot;</span> GST_PTR_FORMAT<span class="gtkdoc opt">,</span> caps<span class="gtkdoc opt">);</span></pre></td>
      </tr>
    </tbody>
  </table>
</div>

<p>
This prints the caps in human readable form.</p>
<p>The current implementation of serialization will lead to unexpected results
when there are nested <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> / <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> deeper than one level.</p>
<div class="refsect3">
<a name="gst-caps-to-string.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-to-string.returns"></a><h4>Returns</h4>
<p>a newly allocated string representing <em class="parameter"><code>caps</code></em>
. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-from-string"></a><h3>gst_caps_from_string ()</h3>
<pre class="programlisting"><a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
gst_caps_from_string (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *string</code></em>);</pre>
<p>Converts <em class="parameter"><code>caps</code></em>
 from a string representation.</p>
<p>The current implementation of serialization will lead to unexpected results
when there are nested <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> / <a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a> deeper than one level.</p>
<div class="refsect3">
<a name="gst-caps-from-string.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>string</p></td>
<td class="parameter_description"><p>a string to convert to <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-from-string.returns"></a><h4>Returns</h4>
<p>a newly allocated <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>][<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-subtract"></a><h3>gst_caps_subtract ()</h3>
<pre class="programlisting"><a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
gst_caps_subtract (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *minuend</code></em>,
                   <em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *subtrahend</code></em>);</pre>
<p>Subtracts the <em class="parameter"><code>subtrahend</code></em>
 from the <em class="parameter"><code>minuend</code></em>
.</p>
<div class="blockquote"><blockquote class="blockquote"><p>This function does not work reliably if optional properties for caps
are included on one caps and omitted on the other.</p></blockquote></div>
<div class="refsect3">
<a name="gst-caps-subtract.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>minuend</p></td>
<td class="parameter_description"><p><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to subtract from</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>subtrahend</p></td>
<td class="parameter_description"><p><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to subtract</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-subtract.returns"></a><h4>Returns</h4>
<p>the resulting caps. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-make-writable"></a><h3>gst_caps_make_writable()</h3>
<pre class="programlisting">#define         gst_caps_make_writable(caps)   GST_CAPS_CAST (gst_mini_object_make_writable (GST_MINI_OBJECT_CAST (caps)))
</pre>
<p>Returns a writable copy of <em class="parameter"><code>caps</code></em>
.</p>
<p>If there is only one reference count on <em class="parameter"><code>caps</code></em>
, the caller must be the owner,
and so this function will return the caps object unchanged. If on the other
hand there is more than one reference on the object, a new caps object will
be returned. The caller's reference on <em class="parameter"><code>caps</code></em>
 will be removed, and instead the
caller will own a reference to the returned object.</p>
<p>In short, this function unrefs the caps in the argument and refs the caps
that it returns. Don't access the argument after calling this function. See
also: <a class="link" href="GstCaps.html#gst-caps-ref" title="gst_caps_ref ()"><code class="function">gst_caps_ref()</code></a>.</p>
<div class="refsect3">
<a name="gst-caps-make-writable.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-make-writable.returns"></a><h4>Returns</h4>
<p>a writable caps which may or may not be the
same as <em class="parameter"><code>caps</code></em>
. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-truncate"></a><h3>gst_caps_truncate ()</h3>
<pre class="programlisting"><a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
gst_caps_truncate (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>);</pre>
<p>Discard all but the first structure from <em class="parameter"><code>caps</code></em>
. Useful when
fixating.</p>
<p>This function takes ownership of <em class="parameter"><code>caps</code></em>
 and will call <a class="link" href="GstCaps.html#gst-caps-make-writable" title="gst_caps_make_writable()"><code class="function">gst_caps_make_writable()</code></a>
on it if necessary, so you must not use <em class="parameter"><code>caps</code></em>
 afterwards unless you keep an
additional reference to it with <a class="link" href="GstCaps.html#gst-caps-ref" title="gst_caps_ref ()"><code class="function">gst_caps_ref()</code></a>.</p>
<div class="refsect3">
<a name="gst-caps-truncate.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to truncate. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-truncate.returns"></a><h4>Returns</h4>
<p>truncated caps. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-fixate"></a><h3>gst_caps_fixate ()</h3>
<pre class="programlisting"><a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
gst_caps_fixate (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>);</pre>
<p>Modifies the given <em class="parameter"><code>caps</code></em>
 into a representation with only fixed
values. First the caps will be truncated and then the first structure will be
fixated with <a class="link" href="GstStructure.html#gst-structure-fixate" title="gst_structure_fixate ()"><code class="function">gst_structure_fixate()</code></a>.</p>
<p>This function takes ownership of <em class="parameter"><code>caps</code></em>
 and will call <a class="link" href="GstCaps.html#gst-caps-make-writable" title="gst_caps_make_writable()"><code class="function">gst_caps_make_writable()</code></a>
on it so you must not use <em class="parameter"><code>caps</code></em>
 afterwards unless you keep an additional
reference to it with <a class="link" href="GstCaps.html#gst-caps-ref" title="gst_caps_ref ()"><code class="function">gst_caps_ref()</code></a>.</p>
<div class="refsect3">
<a name="gst-caps-fixate.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to fixate. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-fixate.returns"></a><h4>Returns</h4>
<p>the fixated caps. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-ref"></a><h3>gst_caps_ref ()</h3>
<pre class="programlisting"><a class="link" href="GstCaps.html" title="GstCaps"><span class="returnvalue">GstCaps</span></a> *
gst_caps_ref (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>);</pre>
<p>Add a reference to a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> object.</p>
<p>From this point on, until the caller calls <a class="link" href="GstCaps.html#gst-caps-unref" title="gst_caps_unref ()"><code class="function">gst_caps_unref()</code></a> or
<a class="link" href="GstCaps.html#gst-caps-make-writable" title="gst_caps_make_writable()"><code class="function">gst_caps_make_writable()</code></a>, it is guaranteed that the caps object will not
change. This means its structures won't change, etc. To use a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>
object, you must always have a refcount on it -- either the one made
implicitly by e.g. <a class="link" href="GstCaps.html#gst-caps-new-simple" title="gst_caps_new_simple ()"><code class="function">gst_caps_new_simple()</code></a>, or via taking one explicitly with
this function.</p>
<div class="refsect3">
<a name="gst-caps-ref.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>the <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> to reference</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-caps-ref.returns"></a><h4>Returns</h4>
<p> the same <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> object.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-caps-unref"></a><h3>gst_caps_unref ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_caps_unref (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>);</pre>
<p>Unref a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> and and free all its structures and the
structures' values when the refcount reaches 0.</p>
<div class="refsect3">
<a name="gst-caps-unref.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-clear-caps"></a><h3>gst_clear_caps ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_clear_caps (<em class="parameter"><code><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> **caps_ptr</code></em>);</pre>
<p>Clears a reference to a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>.</p>
<p><em class="parameter"><code>caps_ptr</code></em>
 must not be <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>.</p>
<p>If the reference is <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> then this function does nothing. Otherwise, the
reference count of the caps is decreased and the pointer is set to <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>.</p>
<p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p>
<div class="refsect3">
<a name="gst-clear-caps.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>caps_ptr</p></td>
<td class="parameter_description"><p>a pointer to a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> reference</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<p class="since">Since: 1.16</p>
</div>
</div>
<div class="refsect1">
<a name="GstCaps.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GstCaps-struct"></a><h3>struct GstCaps</h3>
<pre class="programlisting">struct GstCaps {
  GstMiniObject mini_object;
};
</pre>
<p>Object describing media types.</p>
<div class="refsect3">
<a name="GstCaps.members"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="300px" class="struct_members_name">
<col class="struct_members_description">
<col width="200px" class="struct_members_annotations">
</colgroup>
<tbody><tr>
<td class="struct_member_name"><p><a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a> <em class="structfield"><code><a name="GstCaps-struct.mini-object"></a>mini_object</code></em>;</p></td>
<td class="struct_member_description"><p>the parent type</p></td>
<td class="struct_member_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GstStaticCaps"></a><h3>struct GstStaticCaps</h3>
<pre class="programlisting">struct GstStaticCaps {
  GstCaps *caps;
  const char *string;
};
</pre>
<p>Datastructure to initialize <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> from a string description usually
used in conjunction with <a class="link" href="GstCaps.html#GST-STATIC-CAPS" title="GST_STATIC_CAPS()"><code class="function">GST_STATIC_CAPS()</code></a> and <a class="link" href="GstCaps.html#gst-static-caps-get" title="gst_static_caps_get ()"><code class="function">gst_static_caps_get()</code></a> to
instantiate a <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a>.</p>
<div class="refsect3">
<a name="GstStaticCaps.members"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="300px" class="struct_members_name">
<col class="struct_members_description">
<col width="200px" class="struct_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="struct_member_name"><p><a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> *<em class="structfield"><code><a name="GstStaticCaps.caps"></a>caps</code></em>;</p></td>
<td class="struct_member_description"><p>the cached <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a></p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p>const <span class="type">char</span> *<em class="structfield"><code><a name="GstStaticCaps.string"></a>string</code></em>;</p></td>
<td class="struct_member_description"><p>a string describing a caps</p></td>
<td class="struct_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GstCapsIntersectMode"></a><h3>enum GstCapsIntersectMode</h3>
<p>Modes of caps intersection</p>
<p><em class="parameter"><code>GST_CAPS_INTERSECT_ZIG_ZAG</code></em>
 tries to preserve overall order of both caps
by iterating on the caps' structures as the following matrix shows:</p>
<div class="informalexample">
  <table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
    <tbody>
      <tr>
        <td class="listing_lines" align="right"><pre>1
2
3
4
5</pre></td>
        <td class="listing_code"><pre class="programlisting">caps1
      <span class="gtkdoc opt">+-------------</span>
      <span class="gtkdoc opt">|</span> <span class="number">1  2  4  7</span>
caps2 <span class="gtkdoc opt">|</span> <span class="number">3  5  8 10</span>
      <span class="gtkdoc opt">|</span> <span class="number">6  9 11 12</span></pre></td>
      </tr>
    </tbody>
  </table>
</div>

<p>
Used when there is no explicit precedence of one caps over the other. e.g.
tee's sink pad getcaps function, it will probe its src pad peers' for their
caps and intersect them with this mode.</p>
<p><em class="parameter"><code>GST_CAPS_INTERSECT_FIRST</code></em>
 is useful when an element wants to preserve
another element's caps priority order when intersecting with its own caps.
Example: If caps1 is [A, B, C] and caps2 is [E, B, D, A], the result
would be [A, B], maintaining the first caps priority on the intersection.</p>
<div class="refsect3">
<a name="GstCapsIntersectMode.members"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="300px" class="enum_members_name">
<col class="enum_members_description">
<col width="200px" class="enum_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="enum_member_name"><p><a name="GST-CAPS-INTERSECT-ZIG-ZAG:CAPS"></a>GST_CAPS_INTERSECT_ZIG_ZAG</p></td>
<td class="enum_member_description">
<p>Zig-zags over both caps.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-CAPS-INTERSECT-FIRST:CAPS"></a>GST_CAPS_INTERSECT_FIRST</p></td>
<td class="enum_member_description">
<p>Keeps the first caps order.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GstCapsFlags"></a><h3>enum GstCapsFlags</h3>
<p>Extra flags for a caps.</p>
<div class="refsect3">
<a name="GstCapsFlags.members"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="300px" class="enum_members_name">
<col class="enum_members_description">
<col width="200px" class="enum_members_annotations">
</colgroup>
<tbody><tr>
<td class="enum_member_name"><p><a name="GST-CAPS-FLAG-ANY:CAPS"></a>GST_CAPS_FLAG_ANY</p></td>
<td class="enum_member_description">
<p>Caps has no specific content, but can contain
   anything.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GST-CAPS-ANY:CAPS"></a><h3>GST_CAPS_ANY</h3>
<pre class="programlisting">#define GST_CAPS_ANY              _gst_caps_any
</pre>
<p>Means that the element/pad can output 'anything'. Useful for elements
that output unknown media, such as filesrc. This macro returns a singleton and
should not be unreffed.</p>
</div>
<hr>
<div class="refsect2">
<a name="GST-CAPS-NONE:CAPS"></a><h3>GST_CAPS_NONE</h3>
<pre class="programlisting">#define GST_CAPS_NONE             _gst_caps_none
</pre>
<p>The opposite of <a class="link" href="GstCaps.html#GST-CAPS-ANY:CAPS" title="GST_CAPS_ANY"><code class="literal">GST_CAPS_ANY</code></a>: it means that the pad/element outputs an
undefined media type that can not be detected. This macro returns a singleton
and should not be unreffed.</p>
</div>
<hr>
<div class="refsect2">
<a name="GST-STATIC-CAPS-ANY:CAPS"></a><h3>GST_STATIC_CAPS_ANY</h3>
<pre class="programlisting">#define GST_STATIC_CAPS_ANY       GST_STATIC_CAPS("ANY")
</pre>
<p>Creates a new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> static caps that matches anything.
This can be used in pad templates.</p>
</div>
<hr>
<div class="refsect2">
<a name="GST-STATIC-CAPS-NONE:CAPS"></a><h3>GST_STATIC_CAPS_NONE</h3>
<pre class="programlisting">#define GST_STATIC_CAPS_NONE      GST_STATIC_CAPS("NONE")
</pre>
<p>Creates a new <a class="link" href="GstCaps.html" title="GstCaps"><span class="type">GstCaps</span></a> static caps that matches nothing.
This can be used in pad templates.</p>
</div>
</div>
<div class="refsect1">
<a name="GstCaps.see-also"></a><h2>See Also</h2>
<p><a class="link" href="GstStructure.html" title="GstStructure"><span class="type">GstStructure</span></a>, <a class="link" href="gstreamer-GstMiniObject.html#GstMiniObject" title="struct GstMiniObject"><span class="type">GstMiniObject</span></a></p>
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